Tube-forming machine.



PAT-ENTED MAYZl, 1907. E. WIETH TUBE FORMING MACHINE.

APPLICATION FILED PEB.12, 1906.

IS-SHEET 1.-

N EFgepc mm PATENTED MAY 21, 1907. E. WIE'I. TUBE FORMING MACHINE. APPLICATION FILED P131112. 1906.

.2 SHEETSSHEET 2.

4 3 Z a z l :1; $2

' To all whom it may concern.- P

zen of'the' United States,- and residing at 2500 Second street, in the city of Sacramento,

Improvements-inTube-Forming Machines; 'and I do hereby declare-the following to be a vfull,clean-and exact descriptionof the said 1-10 '1 the operation of'bendin aQstrfip of sheet metal, and interlocking, t continuous tube. Y Broadly the inventioncon'sists" off afeed 4 table from which a .strip' of sheet .metal is drawn by feed rolls, and pushed between'parallel plates with oppositely beveled edges;

edges, to progressively. roll the edges of the stri to confornr to saidbevel edges. A secv on set of feed'rolls which push the strip be-- tween two dies respectively convex, and con cave, and suspended one withintheother to form a channelgradually tapering from a level plane inlet, to a U shaped outlet. A e

a, set 01' ejection rolls which pe1 fe( :t;the tube EUGENE IE T, or SACRALlEN'iliCKLI ,ooMrANr, OESACRAMEN'lTQ; CALIFORNIA; A CORPORATION TUBE-FOTIIR'MINIG A'oH NE Hess 1,136. I

A licant-filed February 12,1906, Serial No. 300,741;

Be it lnio'wn' that I, EUGENE WIET, a citicounty of Sacramento, and Stateof California, have, invented certain new and useful invention, such as will enable others skilled in the art to ,which it most nearly appertainsto make, use, and practice .thesaine; Thisinvention relates; to improvemei ts'in' J machines for forming sheet metal -tubes,.and 15 particularly tubes having fa"; longitudinal ,The object of the invention {is to simplify e edgesto forin'a,

having bending rollers adjacentsaidbeveledi third set of feed rolls to receive the strip thus bent and pushit between curling rollers i which rogress'ively curl it over amandrel'to atubul ar form withinterlocked-edges. {And and eject it.

from above of the same. Fig-J3: isan'end Fig: 4 55 657': are cross Fig; 8 is a cross section detail'o'f'the bending. die s, Fig:.9 10:11:12: 13: 14:,are'details stages of the tube 'bending;-take11 respec-' Specification of Letters Patent. r

Patented Ma 21, 1907.

section of the mandrel." Fig. 21 is a cross sect on of the same taken at X9, In detail the, construction consists frame COIIIPOSOdiOf thepillar archesA, fixed i at intervals on the struts A A": A. "-lhe ieed table B, is supported by the hangers B,

elanipedto the struts A: A" The feed table is providedwith the laterallyadjustable guides B to control the strip A,

cally adjustable inthe brackets by means of of the v All-of the feed rolls are in sets o ftw o mounted inbrackets M, fixed on the struts AHAF The bearings of the rolls are verti- I the turn screws M, M? .thieaded in the cross 1 plates M .All of the feed. rolls are'driven by worms DY, fixed on the main shaft D, and '1 meshed with-thegearD, fixed ont he lower feed roll shaft, which inturnfdrives the up per roll. through the meshed gears-Di, D; All of the feed-rolls are drivenfrom the same 5' shaft, synchronized and timed; to exert the unexi lual, or buckling stresses; 1'

plates E E which-are zsupportedlby the.

angers'E3,-'to'which theyareadjustablyat-; .3 o

tachedby the'bolts', and set-screws EflE i The oute'n ed es of the said plates are beveled inwardly wit .relsgiect to the strip. The rolld are fixed on the-outer same traction upon the strip to avoid any e feed rollsQ, C take-th strip'froni the feed table and push itbe'tween the parallel edge of each platadjac ent the bevelededgei of the opposing plate; to progressively cause the edge of the "strip to assume the angle of the bevel of the plate; The strip'thusedged tapers from the plane width of 'stri p, to a U reaches the second feed rolls 1 ,1 which, v are providediwith the annuler'grooves F to," clear theben't edge of the strip. 4 ,Th'efunction 10f. these rolls istopush-the'strip between the dies G, (3. These dies are supported adjust ably by the bolts, ands'efiscrews Gr G from the hangersGfiG The die G is concave and shape .at;-tlie delivery end. The die G is convex in lines parallel to the-concavity of" Y the dieG; Withinwhic'h it is supported; The

strip thus'ben't reaches the third set of feed rolls H, H -which' are respectively convex,

andconcave 'to eonfornrtothe present conrco tour of the strip" S.- The function of these I rolls istov push the strip between the rollers:

I gressi vely curl-the strip'about'the mandrel called ejectingrolls. I These rolls are both. concave "the upper being provided with the' K, interlock the "edges and-lay the seam.

The rollers J J J J 9; adjustably mounted on the strut A, support the strip a'ncleause it to conform to the lower' contour of the mandrel. The rollers J J J progressively curl'the ed es ofthe strip inwardly until the oppositely ent edges overhang. The rollers J; J 5 progressively interlock the edges; and the re ler J lays or compressesthe seam against the. mandrel, .inaklng it tight.- To

-relieve the friction ofthe laying operation ..the' mandrel is slotted and twoantifrictionrollers K K are inserted to take the c'oIn-- pression of theroller J. The tube thus formed reaches the fourth set of feed rollers L, L which being the last are more properly annular groove L tofclear the scam pfi the tube 'It is the function of, these rolls to cor.-

rect the-distortions of the tube (if any due to the seaming operation, causing it to con-,

form to, the circle of the mandrel and to deliver. the perfected tube from the'inachine.

The main-driving shaft D,, is hung inthe bearings D fixed to the pillar arches A, and

is suitably connected to the source, of power.

Ordinarily the succeeding strip will ,ush

the striprahead of it through ,themac 'nel It is advisable however to deliverjthe tube from the machineonto what is ,kIIOWILflS a draw table; consisting of an endless ,chain havin suitableclam s to,'engage the end of the tuhe and pull it om the fmachineflf 'for .any reason traction should prove insuflicient to ejectit.

" Applicant is familiar with the art of searnless and welded drawn tubing, and of helical,

and straight seamedben't tubing (The advantages in the savin of waste material,

labor, time,- and theun imited len'gth oftubinglpossible are too obvious to rec uire' dis-f, cussion. These advantagesare t e result primarily of the;pushing 'of the tube through the machine: instead of pulling, as has hitlll'." v 'erto-been the practice. i

Patentis."

Q 1 In atube forming machine theeonibination with a frame'and driving mechanism ofafeed table of-'adjustable width, a set of eled edges with progressive bending rollers mounted adjacent said 'b'eveledcd es a second set of adjustable feed rolls, and a pair of adjustably suspended one within the other,

rolls, and a series of progressive'curling, and seaming rollers, coop'eratlng with a mandrel; 'and; a set of ejecting rolls" synchronized with the before mentioned feed ro'lls. -21 In a; tube forming margiine ism of a feed table, a set of feed rolls, and a1,-

mounted adjacent saidbeveled edges; asecconvex dies suspended one within the. other;

* gressi've curling and seaming rollers .cooperating withra mandrel and a'set of ejection r'o'lls' synchronized with the before mentionedfeed rolls.-

. bending mechanism formed of parallel plates 'having' bending rollers ounted -ad acenttheir, edges curling diefs suspended one withtherewith, andmeans for pushing a strip of curling afnd seaming, mechanisms. n

.dies respectively oonca'veiand convex, and

allel' plates with'bevelededges with ro lers a third set of feed rolls, and a series of pro-.

'1 Having thus described this inventiomwhat, .is-claime'd and desired to secure by Letters I -59 adjustable feed rollsland two adjustably" spaced parallel plates with oppositely bev- 5 5 forming a channel tapering from. a flat'plane to af U shape; athirds'etof adjustable feed the combi- ,natlon w th a frame, and a riving mechanondset of feed rolls, andaset of concave and w 3 A tube fori'ning- In'achine-v comprising in the pthelnland adjustable relative to each other, a mandrel, seaming rollerseooperating sheet metal/succ'essively through. the -bend-" testimony whereoffl have hereunto set 

